#!/bin/sh
# kFreeBSD do not accept scripts as interpreters, using #!/bin/sh and sourcing.
if [ true != "$INIT_D_SCRIPT_SOURCED" ] ; then
    set "$0" "$@"; INIT_D_SCRIPT_SOURCED=true . /lib/init/init-d-script
fi
### BEGIN INIT INFO
# Provides:          prometheus
# Required-Start:    $remote_fs
# Required-Stop:     $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Monitoring system and time series database
# Description:       Prometheus is a systems and services monitoring system. It
#                    collects metrics from configured targets at given
#                    intervals, evaluates rule expressions, displays the
#                    results, and can trigger alerts if some condition is
#                    observed to be true.
### END INIT INFO

DESC="monitoring system and time series database"
NAME=prometheus
USER=$NAME
GROUP=$NAME
DAEMON=/usr/bin/$NAME
DAEMON_OPTS="--web.listen-address=localhost:9090"
PIDFILE=/run/$NAME/$NAME.pid
LOGFILE=/var/log/$NAME/$NAME.log
CFGFILE=/etc/$NAME/$NAME.yml

START_ARGS="--no-close --background --make-pidfile"
STOP_ARGS="--remove-pidfile"

config_check()
{
    retcode=0
    errors="$(/usr/bin/promtool check config $CFGFILE 2>&1)" || retcode=$?
    if [ $retcode -ne 0 ]; then
        log_failure_msg
        echo "Configuration test failed. Output of config test was:" >&2
        echo "$errors" >&2
        exit $retcode
    fi
}

do_start_prepare()
{
    config_check
    mkdir -p $(dirname $PIDFILE)
    ulimit -n 8192
}

do_start_cmd_override()
{
    start-stop-daemon --start --quiet --oknodo \
        --exec $DAEMON --pidfile $PIDFILE --user $USER --group $GROUP \
        --chuid $USER:$GROUP $START_ARGS -- $DAEMON_OPTS >>$LOGFILE 2>&1
}

do_stop_cmd_override() {
    start-stop-daemon --stop --quiet --oknodo --retry=TERM/30/KILL/5 \
        --exec $DAEMON --pidfile $PIDFILE --user $USER $STOP_ARGS
}

do_reload_prepare()
{
    config_check
}
alias do_reload=do_reload_sigusr1